Improvement in paper-folding machines



"w. & c. D AN IELS. Paper-Folding Machinel Patented June 29,1875.

THE GRAPHIC C0.PHOT0.-L TH.39 8;.41 PARK PLAOEJLY.

UNITED-STATES EEIoE.

ATENT':

IMPROVEMENT IN PAPER-FOLDING MACHINES.

Specification forming part of Letters Patent No. 164,978, dated June 29,1875; application filed of Kings and State of New York, have inventedanlmprovement in Paper-Folding Machines,

of which the following is a specification:

In an applicationof William Daniels for a patent on folding-machine, aperforatingknife and fingers to support the sheet are described ascombined with the folding-blade of a folding-machine. Our presentinvention relates to an improvement upon the same; and consists in asheet-holder combined with the fingers, and forming a stripper to removethe sheet from the knife, and serving also as a protector to keeptheoperator from injury by the knife.

We combine with the folding and perforating apparatus one or moretongues with inclined cutters, that enter the sheet at the first fold,and over which the folded sheet travels, and the filaments that havebeen allowed to remain to guide the two parts of the folded sheet areseparated by the tongue and cutter as the sheet is folded the secondtime and passed away.

In the drawing, Figure 1 is a vertical section transversely of thefolding-blade, and Fig. 2 is a plan of the parts that fold and separatethe sheet. Fig. 3 is a perspective view of the latch for holding thefinger-plate, and Fig. 4 is a section of the rollers and tongue inlarger size.

The rollers a a and folding-blade b are the same as have usually beenemployed in fold- Jug-machines, and the conveying-bands, sec- 0nd andthird fbldingrollers, and their actua cam that operates this shaft andknife, so

that the same is brought down to perforate the sheet of paper in theline of the first fold,

and said knife acts against the fingers t, as in aforesaid application,and then the knife d is raised before the folding-blade descends; and

June 18, 1875.

as said folding-blade descends its arm pushes back the latch I, thatholds up the finger-plate i, and allows the same to swing down out ofthe way of the folding-blade, and as the said blade b is raised the arme acts upon the lifter m, and restores the finger-plated to its normalposition, ready for the next operation.

One of the special features of the present invention consists in theconstruction of the combined sheet-holder, stripper, and guard t, whichis made as a plate, having one or more slots in it for the passage ofthe knife d. This plate t is upon an arm or arms, n, from the shaft isof the perforating-knife (I, so as to swing in the same are of a circle,and the hub of the arm n is loose upon the shaft,'and a wedge or block,0, is connected by a spring arm or lever, 0, and passes into a spaceprovided for it between a projection, 2, upon the arm n and aprojection, 3, attached to the said shaft. WVhen the key or wedge 0 isin place the arm n of the plate t is firmly held between the projections3 and 5 upon the shaft It, so as to move with it, and the plate 2?serves the purpose of a shield to prevent theoperator being injured bythe perforatingknife descending upon his hand, because the plate willfirst come into contact with the hand and arm, and the cutter besupported.

The plate It descends upon the sheet of paper, and holds it at bothsides of the line of perforations made bythe knife d, said knife passingthrough a slot or slots in this plate t. As the plate t descends uponthe sheet the wedge-block 0 is drawn out by its lever 0 coming intocontact with the fixed stop it. Hence the shaft is is free to turn andallow the knife d to descend and perforate the sheet, after which theshaft is is partially rotated, the knife d is raised, the sheet isstripped from the knife by the plate 2?, and the knife d and plate t areraised clear of the folder I) as it descends, and carries the sheet inbetween the first pair of rollers 66 and to the conveying-bands, asusual.

The perforating-knife is made of a range of lancet-points, and theseseparate the paper more or less, and leave filaments that guide thepaper as it goes through the folding operation; but, inorder to entirelyseparate the sheets at the line of the first fold, we employ one or moretongues, 8, each of which is attached at the back end, and projectsforward,-

and is turned up between the rollers a a, and the folding-blade is madedouble where the end of the tongue is located, so that the fold of thesheet is carried down, and the tongue passed between the leaves orfolded sheet, as seen in Fig. 4, and the belts of the folding-machinecarry the sheet back to the gage t in the folded condition, and with thetongue between the two thicknesses of paper.

An inclined cutting-surface, v, is made in the tongue in the line of theedge of the folded sheet, where such sheet is carried away downwardbetween the second pair of folding-rollers. In this-operation thefilaments that served to connect the sheet at the first fold aresevered, and the sheet separated at this line. I remark that it willgenerally be preferable to employ two of these tongues, with thecuttingedges upon the opposite sides, and that the cutter or knife '0should be made to entirely separate the sheet at the first fold wherethe tongues enter, as illustrated in the drawing.

The cutting-edge 11 will generally be movathe fold when the movement ofthe sheet is arrested.

We claim as our invention- 1. The combination, with the perforatingknifed and plate t, forming a holder, a guard, and a clearer, of the Wedge 0and its actuating-lever, substantially as and for the purposes setforth.

2. The tongue 8, provided with a suitable cutting-edge, '0, combinedwith the folding mechanism, and applied between the first and secdondfolds to separate the paper, as specifie Signed by us this 17th day ofJune, A. D.

WILLIAM DANIELS.

I CHARLES DANIELS.

Witnesses:

' CHAS. H. SMITH,

HAROLD SERRELL.

